Seiko Cal. 3856 - 669

The Seiko 3856-669 represents an important milestone in Seiko's 1971 lineup. Powered by the 3856 caliber with 24j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-b554b8d84016]

Also known as: Tuna, Bellmatic

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

8.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1971

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